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render: reimplemented deinterlacing with new shader-based format conversion

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This commit is contained in:
itsmattkc
2022-08-08 14:05:11 -07:00
parent a270b1e3e1
commit 30b64d9b9c
5 changed files with 58 additions and 3 deletions
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app/shaders/yuv2rgb.frag
+16 -3
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@@ -10,16 +10,29 @@ uniform int yuv_cgu;
uniform int yuv_cgv;
uniform int yuv_cbu;
uniform int interlacing;
uniform int pixel_height;
in vec2 ove_texcoord;
out vec4 frag_color;
void main()
{
vec2 real_coord = ove_texcoord;
if (interlacing != 0) {
float field_height = float(pixel_height / 2);
real_coord.y = floor(real_coord.y * field_height) + 0.25;
if (interlacing == 2) {
real_coord.y += 0.5;
}
real_coord.y /= field_height;
}
// Sample YUV planes
vec3 yuv;
yuv.r = texture(y_channel, ove_texcoord).r;
yuv.g = texture(u_channel, ove_texcoord).r;
yuv.b = texture(v_channel, ove_texcoord).r;
yuv.r = texture(y_channel, real_coord).r;
yuv.g = texture(u_channel, real_coord).r;
yuv.b = texture(v_channel, real_coord).r;
// Pixels will have come in aligned to 16-bit regardless of their actual bit depth, so they must
// be scaled as if they were actually 16-bit